Finding the Fourth Proportional to 1,978,065, 2,729,729.70 and 1,072,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,065 : 2,729,729.70 = 1,072,647.72 : x
2. Step 2: Convert to fraction form
   1,978,065/2,729,729.70 = 1,072,647.72/x
3. Step 3: Cross multiply
   1,978,065x = 2,729,729.70 × 1,072,647.72
4. Step 4: Simplify right side
   1,978,065x = 2,928,038,338,921.28
5. Step 5: Solve for x
   x = 2,928,038,338,921.28/1,978,065
6. Step 6: Final answer
   x = 1,480,253.85